Damper-regulator.



J. DEMAREST.

DAMPER REGULATOR.

APPLICATION FILED OCT. 25. 1913.

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JOHN DEMARES'I, OF SPRINGFIELD, MASSACHUSETTS.

DAMPER-REGULATOR.

Specification of Letters Patent.

Patented J an. 18, 1916.

Application filed October 25, 1913. Serial No. 757,331.

To all whom it may concern: I I

Be it known that 1, JOHN. DEMAREs'r, a citizen of the United States, residing at Springfield, county of Hampden, State of Massachusetts, have invented an Improvement in Damper-Regulators, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to damper regulators of that type wherein a clock mechanism is employed for opening the dampers of a furnace or heating apparatus at a predetermined time. In devices of this nature a latch mechanism of some suitable type is usually employed which holds the damper closed against the action of a weight or a spring, and a clock mechanism is made use of for tripping the latch orlock at a predetermined time so as to permit the weight to open the damper of the furnace The objects of my invention are to provide a novel construction which permits an ordinary alarm clock to be used asa clock mechanism for tripping the latch and which is so designed that the alarm clock can be readily moved into inoperative position for winding the clock or settingthe tripping mechanism without disturbing the latch device, and when the clock is wound and released it will automatically assume a correct or operative position relative to the latch mechanism so as to cause the release or tripping of the latch mechanism at the desired time.

In order to give a correct understanding a of my invention I will describe a preferred embodiment thereof and then point out the novel features in the appended claims.

Referring to the drawings wherein I have illustrated a selected embodiment of my invention, Figure 1 is a view showing the manner in which the device is used; Fig. 2 is a front elevation of the latch mechanism showing the clock moved into its inoperative position for winding or setting the tripping mechanism; Fig. 3 is a side view of Fig. 2

with the clock in its operative position Fig.

4 is a back View of the clock mechanism.

I have shown at l a furnace of ordinary construction provided with the usual draft damper 2 and check draft 3 in the smoke pipe 4. The draft damper 2 is provided with a weight 5 for opening it, which weight is connected to the damper by a flexible connection 6, as usual in devices of this nature. This flexible connection 6 i also connected to the check draft 3 and an operating connection 7 is connected either to the connection 6 or the check draft 3, which connection extends to some point from which the dampers may be opened, which herein is the room above the furnace.

The parts thus far described are such as are usually found in furnaces or heating appliances and form no part of the present invention which relates to the locking devices for holding the weight 5 inactive and the clock mechanism for releasing the locking devices. I

In the construction herein shown the loc mechanism comprises a retaining member 8 in the form of a shaftjournaledin bearings 9 mounted on a suitable frame 10 which shaft has a pin 11 extending therefrom over which the link 12 at the end of the connection 7 may be placed when the damper is to be held closed. This rock shaft 8 is provided with a latch arm 13 which is adapted to be engaged by a latch 14: that is pivoted at 15 tothe frame 10, said latch normally holding the rock shaft in its operative posi tion shown in full lines Figs. 2 and 3. When the latch 14 is tripped by moving upwardly the right hand end thereof in Fig. 2 the latch member 13 will be released and the weight on the connection 7 will throw the latch member into the dotted line position Fig. 3, thus releasing the connection and allowing the weight 5 to open the damper, as will be obvious.

1 The latch 14 is adapted to be tripped at the desired times by a clock mechanism which may be an ordinary alarm clock 16. The usual winding key 17 for the alarm mechanism is made use of to trip the latch 14. The frame 10 is constructed to support the clock 16 in such position normally that the key member 17, which I will hereinafter refer to as the tripping key, is situated directly underneath the right handend of the r latch 1 f so that When the alarm mechanism of the clockris operated the turning of the key member 17 will trip the latch lt.

In devices of this nature it is necessary to re-wind the clock 16 each day which necessitates gaining access to the back face of the clock. To provide a construction whereby the clock will normally be held in its'operative position and yet may be moved into an inoperative position in which the winding key 19 of the clock or the tripping key 17 i are accessible, I have provided the novel clock-supportingmeans illustrated.

Projecting upwardly from the frame 10 is a clock-supporting member 20 preferably in the form of a rod or stiff wire. 1 This member 20 is shown as having the portion 21 and the frame 10 and the proportion of the 'done in devices of this nature.

ing is usually provided with a staple orieye through which the chain 7 passes and which parts issuch that the clock will be firmly held in its position against the frame'lO by the part 22, inwhich position the tripping member 17 isproperly placed to engage the latch 14.: If, however, the clock is moved upon the supporting member 20 until the aperture 26 is at the goose-neck portion 24 of said member, then the clock may be readily turned sidewise, as shown in Fig. 2, to expose the winding key 19 or the tripping key 17,-.thus permitting a person to readily wind the clock or'set the tripping mecha nism. When this has ben done and the clock is released it will naturally gravitate to its operativeposition shown in Fig. 3.

The frame 10 is shown as provided with positioning lugs 27 which enter within the flange 25 when the clock is in operativeposition, thereby holding the clock from lateral movement. The end ofthe goose-neck portion 24 is provided with a removable nut or keeper 28 which when in place prevents the clock'from being entirely removed from the supporting member 20. By removing this keeper 28, however, the clock can be taken off from the keeperor a new clock placed thereon as desired. I

The supporting frame 10 is herein shown as mounted on a backing 30, as is commonly is too small for thelink or ring 12 to pass Such backtherethrough, said eye or staple operating to retain the upper end of the connection 7 in accessible position after having been re leased from the locking device or retaining member.

In orderto effect the closing and opening of'the dampers it is necessary that the chain should have a certain predetermined movement and frequently this movement is such an'amount that it is necessary to place the eye a considerable'distance below the clock mechanism, and when the eyeis placed on the backingthis necessitates a comparatively long backing. It, is not convenient to use a long backing in many places, and to permit ashort backing to be used I propose to pass the chain 7 through an eye 31 connected to a short retaining chain 32, the upper end of which is, secured "to' the backing 30. By using this retaining chain 32 it is possible to have a comparatively short backing 30 for the retaining chain which permits the eye 31 to be situated the proper distance below the clock mechanism without the use of a long backing. I

I have shown on thebacking 30 a plurality of pins or hooks 34: onto which the link 12 of the chain? may be placed by hand thereby to hold the damper open to a greater or less degree as desired.

. Having fully described my invention, what Iclaim as new and desire to secure by Letters Patent is 1. Ina device-of the class described, the combination with a supporting frame, of a damper-locking mechanism mounted thereon, a clock having on its rear face a winding key acting as a lock-tripping device, and a clock-supporting arm'extending from the supporting frame and on which the clock is slidably mounted, said arm having a goose neck portion whereby when the clock is moved on the arm of said goose-neck porto its winding key, while still mounted on said arm, and means on said armfor pre-. ventlng unintentionalv removal of the clock therefrom.

2.- In a device of theolass described, the

combination with a supporting frame, of a shaft pivotally mounted thereon and pro-' vided with a pin to receive the damper chain, a latch arm extending from said shaft, a latch lever pivoted to the frame and adapted to engage said latch arm, a clock having a winding key acting as a lock tripping member, said clock being normally sustained with itslock tripping member in position to trip the latch lever, substantially as described. I

3. As an article of manufacture, a device comprising a supporting frame, a'damperlocking member mounted on the frame, and a clock-supporting arm extending from the frame and provided with a goose-neck portion the clock can be turned to provide access tion to permit the clock to be moved bodily away from the supporting frame and the goose-neck portion allowing the clock to be turned to provide access to its Winding key, said clock-supporting arm being so constructed that as the clock is returned to normal position it will take a definiteposition relative to said supporting member said frame being provided With lugs to engage said clock tohold it in a definite predeter- 1e i mined position.

In testimony whereof, I have signed my fl name to this specification, in the presence of two subscribing Witnesses.

JOHN DEMAREST.

itnesses HENRY A. Boom, GEO. F. BORDEN.

(Rapier, of this patent may be obtainedfor five cents each, by addressing the Commissioner of Patents.

Washington, D. C. I 

